hbase-dev mailing list archives

Greetings,
Other than reading the the source code, google papers, seda, etc. how does
someone get solid understanding of the code base?
Are there any high-level (or low level!) diagrams of sort that go over the
various components of hbase? (various read/write stages, gossip, etc.)
I'm guessing this is wishful thinking but I thought I'd ask :)